Consider the simple MOS op-amp circuit shown in Figure P13.l. The bias current is IQ = 200...

Consider the simple MOS op-amp circuit shown in Figure P13.l. The bias current is IQ = 200µA. Transistor parameters are The width-to length ratio (W/ L)for M1 and M2 is 20 and for M3 is 40.(a) Design the circuit such that I D3 = 200µA and vo = 0 when v1 = v2 = 0. (b)Find the small signal voltage gains (i) Ad = υ0l/υd and (ii) A2 = υ0/υol (c) Determine the overall small-signal voltage gain A = υo/υd.